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I know it was created with php and I knew phpbb had it as well, what I'm wondering is if the time is a global variable or something, or did they run a function that acutally timed the creation of the page, and then spat out a number. i.e. does php keep track of page creation times or did they makeup a function.

Basically you grab a timestamp at the very start of the page, do the processing, grab another timestamp and the difference between the two (nicely formatted) is the page generation time. There are code examples there.

Knowledge is knowing that a tomatoe is a fruit; wisdom is not putting it in a fruit salad.

The reason for the addition is microtime rerturns a string with the microseconds a space then the regualr seconds. So you need to add the two toegther then subtract the number from the start and from the end.

Please don't PM me with questions.
Use the forums, that is what they are here for.